एक आयाम मॉडूलित सिग्नल में 10 kHz की वाहक आवृत्ति होती है। ऊपरी साइडबैंड 11 kHz पर संचरित होता है। AM सिग्नल को संचारित करने के लिए आवश्यक बैंडविड्थ __________ है

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  1. 10 kHz
  2. 2 kHz
  3. 11 kHz
  4. 1 kHz

Answer (Detailed Solution Below)

Option 2 : 2 kHz
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Detailed Solution

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अवधारणा:

एक आयाम माॅडुलित तरंग का आवृत्ति स्पेक्ट्रम निम्न द्वारा दिया गया है:

AM में बैंडविड्थ = (fc + fm) - (fc - fm)

AM में बैंडविड्थ = 2fm

गणना:

fc = 10 kHz

ऊपरी साइडबैंड = fc + fm = 11 kHz

∴ संदेश आवृत्ति इस प्रकार है:

fm = 11 – 10 = 1 kHz

इसलिए, बैंडविड्थ इस प्रकार है:

= 2fm = 2 × 1 kHz = 2 kHz

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